Make babeltrace(1)'s CLI Git-like and implement the list-plugins command

[babeltrace.git] / common / common.c

diff --git a/common/common.c b/common/common.c
index 47186e164a74e23b83270ed882d38209fc87a173..379b13012a9a09b6575625ef4dee7e7e72d46355 100644 (file)
--- a/common/common.c
+++ b/common/common.c
@@ -22,6 +22,7 @@
  * SOFTWARE.
  */
 
+#include <unistd.h>
 #include <string.h>
 #include <sys/types.h>
 #include <pwd.h>
@@ -163,3 +164,145 @@ error:
 end:
        return ret;
 }
+
+static bool supports_colors(void)
+{
+       static bool supports_colors = false;
+       static bool supports_colors_set = false;
+       const char *term;
+
+       if (supports_colors_set) {
+               goto end;
+       }
+
+       supports_colors_set = true;
+
+       term = getenv("TERM");
+       if (!term) {
+               goto end;
+       }
+
+       if (strncmp(term, "xterm", 5) != 0 &&
+                       strncmp(term, "rxvt", 4) != 0 &&
+                       strncmp(term, "konsole", 7) != 0 &&
+                       strncmp(term, "gnome", 5) != 0) {
+               goto end;
+       }
+
+       if (!isatty(1)) {
+               goto end;
+       }
+
+       supports_colors = true;
+
+end:
+       return supports_colors;
+}
+
+BT_HIDDEN
+const char *bt_common_color_reset(void)
+{
+       return supports_colors() ? "\033[0m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_bold(void)
+{
+       return supports_colors() ? "\033[1m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_fg_default(void)
+{
+       return supports_colors() ? "\033[39m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_fg_red(void)
+{
+       return supports_colors() ? "\033[31m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_fg_green(void)
+{
+       return supports_colors() ? "\033[32m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_fg_yellow(void)
+{
+       return supports_colors() ? "\033[33m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_fg_blue(void)
+{
+       return supports_colors() ? "\033[34m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_fg_magenta(void)
+{
+       return supports_colors() ? "\033[35m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_fg_cyan(void)
+{
+       return supports_colors() ? "\033[36m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_fg_light_gray(void)
+{
+       return supports_colors() ? "\033[37m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_bg_default(void)
+{
+       return supports_colors() ? "\033[49m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_bg_red(void)
+{
+       return supports_colors() ? "\033[41m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_bg_green(void)
+{
+       return supports_colors() ? "\033[42m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_bg_yellow(void)
+{
+       return supports_colors() ? "\033[43m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_bg_blue(void)
+{
+       return supports_colors() ? "\033[44m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_bg_magenta(void)
+{
+       return supports_colors() ? "\033[45m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_bg_cyan(void)
+{
+       return supports_colors() ? "\033[46m" : "";
+}
+
+BT_HIDDEN
+const char *bt_common_color_bg_light_gray(void)
+{
+       return supports_colors() ? "\033[47m" : "";
+}